Flexible conduit-joint.



*NO. 882,836. PATENTED MAR. 24, 1903.

' M. P. MQLAUGHLIN.

FLEXIBLE OONDUIT JQIN'L'. APPLICATION FILED MAR 13, 1907.

UNITED STATES MILTON P. MOLAUGHLIN, 0F WAKEFIELD, MASSACIHHBETTS.

YFLEIKIIB LE GON'LDUIT-EOINT.

Elpecificotion of Letters Patent.

ltisrch 24, 1908.

Application filed March 13, 1902". Serial No. 362,084.

To all whom it may concern:

Be it known that I, MILTON P. MQLAUGH- LIN, of vvckefield, in the county of Middlesex and State of Massachusetts, have invented.

= certain new and useful lmproveineots in Flexible Conduit-Joints, of which the iollowing is a specification.

This invention relates to flexible conduits composed mainly of sections of one ..l or other rigid material, flexibly connected so that each may have cert-sin dcgree of independent swingii movement without interrupting the contiiuity of the conduit.

An example of the cl. so of conduits to which my lnvention relates, is found in means for conducting;- com pressed air, etc

or h 1d tween mil v core or tween a. lommoi'iivc tender and cor.

My ilwaiutionis embodied in o; conduit joint of improved construction or.ls;;t te ;l to connect two adjacent conduit sections, and permit their independent movement, the oint forming s port of the conduit.

The hive ion consists in the improve-- ments which i will now proceed to describe and claim.

Of the occonipony'img-drawings, forming a part of this specification ,-Figure l repre sents a side elevation of it condoit joint en1- bodying my invention. Fig. rep osen a. section on line 2-*2 of Fig. l. 111:. Kroprcscnts on end View of the joint. lrepreemits a. section on line 4ll of Fig. 2. Fig. 5 represents a section. on line 5-5 oi Fig. 2. Fig. 6 represents a side View of a conduit composed of plurality of sections sod a plurality of joints connecting the some, the

jOlIlES being constructed in accordance with my invention.

lhe same letters of reference indicate the some parts in all the figures.

My improved conduit joint comprises two terminal conduit sections 12 and 13, mini-- posed of any suitable rigid or .inex mnsihlo material. The section 13 has one oi its end portions formed as a socket 14, which.

internally convex, its inner surface being o [tilii llilii it 00113 9.

7' secondly on annuler socket member 18 which surrounds the hall member, and is connected with the section 12 by arms 1%). The periphery of the hell member 15 is a sphere or 2. segment of here, the center of which is the center of the sc mentoi inner surface of the coco sectiin'i Th coupling members are sr 6{l that they hold the swtions 12 so: .23 separated. from each other by an inter iiig space which ermite either oi the sections to swing irroll oircctio s about the center oi the coursing member 15. .lhe section .12 is provided with an annular extension :30, which bridges the space loci/ween the swims l2 and 13, 2 ml which is is lit nod to inner surf: r t rot the con :her 15 being; rise the renter of the surface of the taxis-melon ill). nsion is made of expensihle met, not it is oriented to he priest-d OLi'lW'ZL. ogoinst the soc ct l4 to maintain it iluid tight joint tlieirrmiiljli by pressure within the conduit.

Any suitable material once he employed for the extension 20, such as rijiblier voices ized to semi-hardness without having); the relative rigidjit of so-ciilled herd. ruhlw if desired, the extension men, he made of lead or (in exponsiolc alloy or composition.

The extension 20 i s (.lQiL-ELCilitlJijf so mired to the section. 12, the "preferred. securing means "l'icing o flanged coupling not 21 ei igoging an outwardlpprojic ng: hence M formed on the extension 20, said ilsngo resting on o formed on the section 1.2, the letter lowing a. screw-thresdcd portion s11rrouruiing: i seat 23, and engaging the internal tln'ezld ofthe no t 2? .l

24 represents in spring which bears on the inner surface of the extension fl and emrrts to set the extension oi1t\vor ll against the socket l-l, said n being; preferably :1. resilient ring out at one point, and. having a tendency to expend.

As clearly indicated in of the ings, around the exponsiblc portion 20, there is an open spsce between the edge oithe concave socket portion 14- and. the coupling '21 which connects said expsns hle portion to the terminal section hie portion is therefore free to he a Atoll pon by the spring 2% w:' hoot rest ictwo oi. its

an outward pressure on. the some tending The soil expense pressure by anything surrounding the expansible portion other than the internal surace of the socket 14.

It will be seen that the'expansible extension is adapted to be at all times setout against the soclitet 13 by internal pressure, thus maintaining a tight joint. The coupling members connecting the sections 12 and 13 Within the 'conduit p'erl'orm the office of connecting the sections of the joint and' l1olding themagai'nst' se aration. I Owing to the location of the coup ing members within the conduit/and to "the relatively small area of I the rubbing surfaces oi said membersy-the friction caused by independent swinging movements of the sections is much less thani would be the case if the coupling members were outside the conduit.

The sections 12 and 13 are adapted for connection with suitable pipe sections 26, preferably by means of internal screw threads, their outer ends engaging external threads on the pipe sections, as shown in Fig. 2.

In Fig. 6 I show an elongated conduit which includes a plurality of joints embodying my invention, this conduit being of the character used between cars or between a locomotive tender and a car, and provided ceasesattached to the sections, and located within the conduit, the said inner portion being provided internally with an expanding spring.

2. A flexible conduit joint comprising two terminal inexpansible sections separated by an intervening space, a ball coupling member attached to one sectionfa socket coupling member attached to the other section, said members projecting .from the respective sections, and being .interengaged between thesame and withinthe conduit, one section having an internally concave socket, an expansible, externally convex extension carried by the other section, and bridging said space, the said extension fitting the said soclz'et, and means for-detachably securing the extension to the section by which it is carried,

3. A flexible conduit joint comprising two terminal inexpansible sections separated by an intervening space, a ball coupling member attached to one section, a socket coupling member attached to the other section,

said members projecting from the respective sections, and being interengagedbetween the same and within the conduit, one section having an internally concave socket, while the other has an annular seat and a screw threaded portion outside the seat, an ex- 753 pansible, externally co'nvex'extension fitting said socket, andhavmg a flange bearing on said seat, and a flanged coupling nut'engaging the flange of the extension and the said screw threaded portion.

In testimony whereof lhaveaflixed my signature, in presence oftwo witnesses.

MILTON -P. MoLAUGllLlN,

\Vi'tnesscs I O: F. BROWN, I E. BA'roincLnnn. 

